Articles | Volume 23, issue 19
Research article
13 Oct 2023
Research article |  | 13 Oct 2023

Characterization of the nitrogen stable isotope composition (δ15N) of ship-emitted NOx

Zeyu Sun, Zheng Zong, Yang Tan, Chongguo Tian, Zeyu Liu, Fan Zhang, Rong Sun, Yingjun Chen, Jun Li, and Gan Zhang


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2023-500', Anonymous Referee #1, 09 May 2023
  • RC2: 'Comment on egusphere-2023-500', Anonymous Referee #2, 29 Jun 2023
  • RC3: 'Comment on egusphere-2023-500', Anonymous Referee #3, 04 Jul 2023
  • AC1: 'Comment on egusphere-2023-500', Chongguo Tian, 16 Aug 2023

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Chongguo Tian on behalf of the Authors (16 Aug 2023)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (24 Aug 2023) by Katye Altieri
AR by Chongguo Tian on behalf of the Authors (28 Aug 2023)  Author's response   Manuscript 
Short summary
This is the first report of ship-emitted nitrogen stable isotope composition (δ15N) of nitrogen oxides (NOx). The results showed that δ15N–NOx from ships was −18.5 ± 10.9 ‰ and increased monotonically with tightening emission regulations. The selective catalytic reduction system was the most vital factor. The temporal variation in δ15N–NOx was evaluated and can be used to select suitable δ15N–NOx for a more accurate assessment of the contribution of ship-emitted exhaust to atmospheric NOx.
Final-revised paper